Doctor Dolittle heads for the high seas in perhaps the most amazing adventure ever experienced by man or animal. Told by nine-and-a-half-year-old Tommy Stubbins, crewman and future naturalist, the voyages of Doctor Dolittle and his company lead them to Spidermonkey Island. Along with his faithful friends, Polynesia the parrot and Chee-Chee the monkey, Doctor Dolittle survives a perilous shipwreck and lands on the mysterious floating island. There he meets the wondrous Great Glass See Snail who holds the key to the greates mystery of all.